THERMOHALINE CIRCULATION
Installation opening + outdoor performance with audience participation as part of MAY’D Festival & market. All welcome!
Sat 30th May, 11:30 AM - 12 PM
Third Space Gallery + Digital, 132 Little Malop St, Geelong
As a journey of artistic exploration by the Creative Occupation collective, this project invites us to think with the process of Thermohaline Circulation, the great ‘global conveyor belt’ that underpins the continuous movement of the oceans. This silent deep-water current system is essential to the balance of life on Earth – yet it pulses in a circular rhythm beyond human scale at every level. The project began with an urge to know whether Thermohaline Circulation could provoke an idea on how humanity might similarly work in a harmonious flow. By looking to the magnificent forces of the seas, we were interested in: what is the ‘interflow’ of environment and humanity?
With an attention to self-sufficiency and balance within the circulatory motion along the undulating path of the ocean current system, the installation mirrors the forces and mechanics of Thermohaline Circulation. In doing so, it is there to drive activities of thinking through a new collective process experience.
Hosted at the Third Space Gallery + Digital (the window space operating 24/7), the project opens with a performance and audience participation during the MAY’D Festival and market on Saturday, 30th May, 11:30 AM.
Installation Premise
The ocean moves because it must. Not by choice, not by design, but by the same fundamental laws that govern every fluid system on Earth, including bodies. From planetary and cosmic systems to small-scale and cellular ones.
The movement of water is driven by density differences regulated by temperature (thermo) and salinity/saltiness (haline). Gravity pulls dense water downward — cold, high-salinity polar water sinks to the ocean floor, while warmer surface water replaces it, creating a current [1]. The flow begins its slow journey toward the equator. By diffusion, heat and salt spread across concentration gradients, redistributing energy over thousands of kilometres of open ocean [2]. As with osmotic interflow, where Osmosis governs the movement of water across biological and physical boundaries, drawing fluid from regions of low solute concentration towards those of high concentration, maintaining the salinity gradients that keep the entire system and life in motion [3].
Together these forces power a conveyor belt moving approximately 17 million cubic metres of water per second [4], in an unimpeded movement. A single complete cycle takes roughly 1,000 years [5].
At the macro and micro levels, the system self-regulates, and the human self is insignificant to it. Elements influence each other through forces of nature. A passive transport like that, always moving towards balance, puts process over instant action: meaningful change is slow, cumulative, largely non-conscious. It may invite playful, circular, and wondrous ways of sensing and thinking about worlds and bodies.
The system can be disrupted. Freshwater from melting ice sheets dilutes surface salinity, weakening density gradients, slowing the descent of polar water [6]. When circulation slows, heat distribution falters. Weather patterns shift. Ecosystems destabilise [7].
The system does not panic. It recalibrates. Slowly, over centuries, gradient reasserts itself and the conveyor resumes. The ocean has been doing this since long before we arrived. It will continue long after. We are not the ocean. We are simply what the ocean moves through and with.
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[1] Rahmstorf, S. (2002). Ocean circulation and climate during the past 120,000 years. Nature, 419(6903), 207-214.
[2] Stewart, R. H. (2008). Introduction to Physical Oceanography. Texas A&M University.
[3] Alberts, B. et al. (2015). Molecular Biology of the Cell (6th ed.). Garland Science.
[4] Talley, L. D. et al. (2011). Descriptive Physical Oceanography: An Introduction. Elsevier.
[5] Primeau, F. (2005). Characterising transport between the surface mixed layer and the ocean interior with a timeline: A diagnostic study of the Southern Ocean. Journal of Physical Oceanography, 35(4), 551–564.
[6], [7] Caesar, L. et al (2018). Observed slowing of the Atlantic meridional overturning circulation amid global warming. Nature, 556(7700), 191–196.